Extractor for cotter pins, nails, and the like



Nov. 23 1926. 1,608,327

G. N. LEMMON EXTRACTOR FOR COTTER PINS, NAILS, AND THE LIKE Fi led Jan. 29, 1926 Il 4, mm mllllm 71? Y INVENTOR.

GEORGE/l. LEMMON j by his aizorz zqys Patented Nov. 23, 1926.

GEORGE N. LEMIVION, F BIRMINGHAM, ALABAMA EXTRAC'IOR FOR COTTER PINS, NAILS, AND THE LIKE.

Application filed January 29, 1926. Serial No. 84,651.

My invention relates to an extractor for cotter-pins, tacks, nails and the like, and

particularly to extractors of the plier type adapted to be gripped in the hand. Among the principal objects of my invention are, (1) to provide an extractor which will withdraw a pin or nail which has but a small portion accessible; (2) to provide an efficient manually operated extractor which is simple and inexpensive to manufacture.

\Vhile the gripping jaws of my extractor may be shaped in any fashion appropriate to the service for which it is designed, I have illustrated jaws primarily intended for clamping upon a cotterpin, and in the accompanying drawings,

F 1 is a side elevation of an extractor in which my invention is embodied in this form;

Fig. 2 is a side elevation corresponding to Fig. 1, but illustrating the operation of the extractor;

Fig. 3 is a side elevation of jaw lever;

Fig. 1 is a side elevation of the fulcrum lever;

Fig. 5 is a broken plan of the fulcrum end of the latter;

2 6 is a side elevation of the link F1 aw mem er and Fig. 7 is an end elevation of the extractoras viewed from the left in Fig. 1, showing how the parts are connected together.

Cotter-pin extractors are commonly provided with a point intended to enter and engage the eye of the cotter-pin. hen cotter-pins are in good order they are readily removed by a pair of ordinary pliers. In actual practice, however, cotter-pins are often encountered which have been hammered in, the eye having been thereby closed or even broken. Often, also, so small a portion of the pin is accessible thatit is treinely difficult to get a grip on the exposed end with an ordinary pair of pliers. The present device may be successfully used even under these conditions.

My device includes a pair of clamping jaws such as have long been'in general use in nail extractors. Cotter-pins, however, are generally used in places where a nail extractor cannot be used, as there is seldom a surface upon which the fulcrum arm of the nail extractor can be rested. The addition of the extra handle member makes the new device easily operated and effective in the difficult cases for which no other device is at all suitable.

Referring to the shown comprises a arm 10 shaped at o drawings, the appliance manually gripped lever no end to form a j aw 11,

and an opposed manually gripped lever arm 12 shaped at its corresponding endto form a fulcrum fork 13 which straddles the jaw 11. While a fork end is preferable it is not necessary. It is essential crum lever 12 shall upon the support, e

only that the 'ful have an end which rests g. a nut from which the cotter pin is extracted.

. Interposed between two lever arms 10 oted at 16 and 17 One free end of the a jaw 18 opposed straddled by the forked 12. At its opposite free end the link is proand connecting the and 12 is a link p1vto the arms 10 and 12. link 15 is shaped to form to the jaw 11, and also end 13 of the arm vided with a tail 19 engaged by the free end of a leaf spring 20 secured at 21 to the arm 12. The effort of the spring tends to move the jaws 18 and 11 through the fork 13 of the lever arm 12.

The operation of the extractor is readily followed from Figs. 1 and 2. To open the jaws the hand grip 12 are separated.

ends of the arms 10 and The fork 13 is held by the spring 20 above the gripping ends of the jaws 11 and 18.

The latter may now be positioned on opposite sides of the head of the cotter-pin 23.

When the arm 10 is pressed toward the arm 12 by the grip of the hand, the jaw 11 approaches the jaw 18, and

clamps the cotter-pin head. and 12 are further As the arms 10 closed, the forked fulcrum end of the arm 12 swings on the pivot 17 toward the plane aw arm 10 is now with the cotter-pin.

upon the support 2 of the nut 22 thr passes, and afurther the arms 10 and 12 is exerted through the link 15 to lift the away from the nu started through it jaws t 22. s hole 18 and 11 straight The pin 23, thus in the nut, may

now be pulled straight through the hole by the bodily displacement of the extractor away from the nut. If its frictional engagement is still t however, a second ther down on the 0 tion repeated.

00 great to permit this, grip may be taken furotter-pin, and the opera- The physical structure of the parts is rugged, simple and serviceable. It may be varied in detail while still embodying the thoughts which underlie what I claim as my invention.

I claim:

1. An extractor for cotter-pins and the like, comprising a pair of levers, a link connecting the same and having a jaw end, one of said levers having a jaw end cooperating with the link jaw, the other lever having a fulcrum end which moves across the plane in which the jaws meet, when the operating levers approach each other.

2. An extractor of the type described, comprising a lever with forked fulcrum end adapted to straddle the head of a pin or the like, and a pair of cooperating jaw members pivotally connected together, one of the jaw members being pin connected to the fulcrum lever, said jaw members playing across the plane of said :forked end of the fulcrum lever.

3. An extractor comprising a jaw lever, a fulcrum lever, a link jaw cooperating with the lever jaw, a pivotal connection in the neighborhood of the jaw between the link and jaw lever, and a pivotal connection between the link and fulcrum lever at a point remote from the link jaw.

4. An extractor comprising a jaw lever, a fulcrum lever, a link jaw cooperating with the lever jaw, a pivotal connection in the neighborhood of the jaw between the link and jaw lever, and a pivotal connection between the link end fulcrum lever at a point remote from the link jaw, together with spring means engaging the link tending to urge the clamping jaws past the fulcrum lever.

5. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together and an extension on one of said jaws in combination with a handle member to which said extension is pivotally connected, there being a fulcrum end rigid with said handle member.

6. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together,'a rigid handle extension on one jaw, and a rigid extension on the other jaw, in combination with a second handle member pivotally connected with said second extension there being a fulcrum end rigid with. said second handle member.

7. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together, and an extension on one of said jaws,

in combination with a handle member to which said extension is pivotally connected, there being a fulcrum end rigid with said handle member said handle member being operable independently of the operation of the aws.

8. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together, a rigid handle extension on one jaw,

and a rigid extension on the other jaw, in"

combination with a second handle member pivotally connected with said second extension, said second handle member having a fulcrum arm which extends from the pivot towards the j aws. I

9. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together, a rigid handle extension on one jaw, and a rigid extension on the other jaw, in combination with a second handle member pivotally connected with said second extension, said second handle member having an arm which straddles the jaws and extends to their gripping point. 7

10. In an extractor for cotter-pins or the like, a pair of jaws pivotally connected together, a rigid handle extension on one jaw, and a rigid extension on the other jaw, in combination with a second handle member pivotally connected with said second extension, said second handle member having a fulcrum end which extends to the gripping point of the jaws. 7

1.1. In an extractor for cotter-pins or the like, a pair of cooperating clamping jaws, and a handle rigidly attached to one of said jaws, in combination with a second handle pivotally attached to the second jaw, and an arm rigid with said second handle extending from the point of attachment toward the clamping contacts of the jaws said arm being adapted to act as a fulcrum for the jaws.

12. In an extractor for cotter-pins or the like, a. pair of cooperating clamping jaws, and a handle rigidly attached to one of said jaws, in combination with a second handle pivotally attached to the second jaw, an arm rigid with said second handle extending from the point ofattachment toward the clamping contacts of the jaws said arm being adapted to act as a fulcrum for the jaws, and spring means tending to keep the second jaw in fixed relation with its handle. In testimony whereof I have signed my name to this specification.

e. N. LEMMON.

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